Rocket Boys Crossword

An object that can be propelled to a great height or distance, usually into space
Recurring at intervals of time, and related to the table of elements
Resembling or consisting of small grains or particles
the smallest particle of a chemical element that can exist.
A secondary product made in the manufacture of something else
the branch of mathematics dealing with the properties and manipulation of numbers
an essential or characteristic part of something abstract
A chemical element, found in most pools
a light silvery grey metal, also a chemical element
a statement that the values of two mathematical expressions are equal
a chemical substance used in the production of energy, air planes have them
a low-melting alloy,used for joining less fusible metals.
a series of Soviet artificial satellites, the first of which was the first satellite to be placed in orbit.
a salt or ester of nitric acid
the branch of science which investigates properties and reactions
a surveying instrument with a rotating telescope for measuring horizontal and vertical angles.
a mathematical determination of the amount or number of something
a violent shattering or blowing apart of something
an artificial body placed in orbit round the earth or another planet in order to collect information
concerned with, operating by, or producing electricity.